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The Shortest Day
Next edition: Saturday, 19 December 2026Box Hill Main Car Park, Dorking, Surrey KT20 7LB, England
Race area · approximate race area. Approximate race area. Check the organiser’s website for the exact start and race-day directions.
Location evidence
Existing saved event-to-place evidence reused; geography query derived from 'Box Hill Main Car Park, Dorking, Surrey KT20 7LB'. GeoNames exact settlement/suburb name match for 'Dorking', country England, administrative area Surrey, region South East; population 17747 (zero means unspecified). Representative event-area point, not a venue address, exact start or radius guarantee. Directional catalogue locations use the first disclosed event locality only as EVENT_AREA; other route endpoints are not substituted. Geographic lookup does not reverify dates or non-location facts. GeoNames (https://www.geonames.org/), CC BY 4.0; transformed to event-area coordinates with separate event-source evidence.
Location checked 2026-09-14.
A dawn-to-dusk winter challenge accumulating complete ten-mile trail loops at Box Hill.
Official race site (opens in a new tab)
Optional device-only history; never synced to your account. Shared-device users can leave it off.
DistanceVariable · 16.093km loop
AscentNot verified
Event window7h 50m options
Entry£85
Formatfixed time · looped
Navigationfully marked
StartBox Hill Main Car Park, Dorking, Surrey KT20 7LB
FinishBox Hill Main Car Park, Dorking, Surrey KT20 7LB
Base campSupported
Next edition
19 December 2026
This is the most relevant confirmed edition currently held for the permanent race family. Edition-specific facts should still be checked against the final organiser instructions.
Edition archive
This is the only edition currently stored for this race family. Earlier verified editions can be added without changing the permanent race URL.
Check the official race source (opens in a new tab)Non-standard fixed-time endurance event
Conventional metrics are not applicable.
The selected 2026 edition is a fixed-time format with no truthful fixed headline distance. Race For You records the verified objective, loop and event-window facts separately. Conventional Difficulty V2, Cutoff Pressure V2, cutoff pace and personal-finish calculations are unavailable because they would require fake inputs.
This format is intentionally not converted into a normal 50K, 100K or 100-mile comparison. Its event window is not relabelled as a conventional cutoff. Check the organiser before entering, travelling or using these details for training decisions. An older edition may appear in the archive, but its course facts are not silently carried into this one.
Verification
What we know today.
- Successful source check
- 4 Sept 2026
- Catalogue record updated
- 13 Sept 2026
- Source confidence
- high
- Official source
- Available
How the format works
A real objective, not a fake distance.
Accumulate complete ten-mile loops from the published approximate sunrise to sunset window.
Source transparency
Verify the final event detail.
Checked 13 September 2026. Entry fee: 85 GBP. Other stored facts retain their previous source review from 2026-09-04.
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Use the catalogue's explicit format and evidence filters. Variable-total events are not converted into conventional distances.